code: def sex(self):
      if self.gender is None:
          return None
      return "M" if self.gender == 1 else "F"
  
file_path: insightface/python-package/insightface/app/common.py
imports: import numpy
  from numpy.linalg import norm
label_desc: Use image node_id 6 for calling the Face obj's underlying member method code with example usage: obj.sex() and returns: unknown, None